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Device for variably adjusting the control times of gas exchange valves of an internal combustion engine

A technology for controlling time and internal combustion engines, which is applied to valve devices, mechanical equipment, engine components, etc., and can solve the problems of small volume of pressure oil and inability to ensure adjustment

Active Publication Date: 2012-07-04
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore the volume of pressure oil available in the idling phases is too small to guarantee adjustment in these phases

Method used

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  • Device for variably adjusting the control times of gas exchange valves of an internal combustion engine
  • Device for variably adjusting the control times of gas exchange valves of an internal combustion engine
  • Device for variably adjusting the control times of gas exchange valves of an internal combustion engine

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Experimental program
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Embodiment Construction

[0031] figure 1 An internal combustion engine 1 is shown schematically, a piston 3 cooperating with a crankshaft 2 is shown in a cylinder 4 . In the embodiment shown, the crankshaft 2 is connected to the intake camshaft 6 or the exhaust camshaft 7 via a traction drive 5 in each case, wherein a first and a second device 10 provide the connection between the crankshaft 2 and the camshafts 6 , 7 . relative twist. The cams 8 of the camshafts 6 , 7 actuate one or more intake gas exchange valves 9 a or one or more exhaust gas exchange valves 9 b. Likewise, only one of the camshafts 6 , 7 can be equipped with the device 10 or only one camshaft 6 , 7 equipped with the device 10 can be provided.

[0032] Figure 2a and 2b A first embodiment of the device 10 according to the invention is shown in longitudinal section or side plan view. The device 10 has a transmission part designed as an outer rotor 22 and a driven part designed as an inner rotor 23 . The outer rotor 22 has a hous...

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Abstract

The invention relates to a device (10) for variably adjusting the control times of gas exchange valves (9a, b) of an internal combustion engine (1). Said device comprises a drive element (22), an output element (23), at least one pressure chamber (35, 36), a pressure medium system (37) and a pressure reservoir (43), the pressure chamber (35, 36) and the pressure reservoir (43) communicating with the pressure medium system (37) and a phase position between the output element (23) and the drive element (22) being modifiable via the pressure medium system (37) by supplying a pressure medium to or discharging a pressure medium from the pressure chamber (35, 36).

Description

technical field [0001] The invention relates to a device for variably adjusting the control time of a gas exchange valve of an internal combustion engine, which has a transmission member, a driven member, at least one pressure chamber, a pressure oil system and a pressure accumulator, wherein the pressure chamber and the pressure accumulator are connected to the pressure The oil system is connected, wherein the phase between the driven element and the transmission element can be changed via the pressure oil system by supplying pressure oil to the pressure chamber or discharging pressure oil from the pressure chamber. Background technique [0002] Devices are used in modern internal combustion engines for variably adjusting the timing of the gas exchange valves so that the angle between the crankshaft and the camshaft can be formed variably in a defined angular range between the maximum front position and the maximum rear position. phase relationship. For this purpose, the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/344
CPCF01L2001/34423F01L1/3442F01L2001/34446F01L2001/34453F01L2800/04F01L2820/01F01L2001/34459
Inventor 安德烈亚斯·施特劳斯
Owner SCHAEFFLER TECH AG & CO KG